Also, the header is too large to handle as of the current content is displayed. Can be a little sleek on height.
Also the banner can be 10 % smaller, as the banner takes it all the space above the fold. The visitors would more be interested to read the content?
Another point I can think of is too much blue? Background is really cool! can use red color bullets instead of blue and link colors to be red on hover?
This can make it interesting to surf through the pages and can attract the eyes more!
May be it needs some more UI
That;s it for now!